I really felt this. We are a couple of apathetic peas. I think we care too much and have become burnt out, but the cap on our motivation pipe might just be the dopamine thing (constant small rewards). I know there have been rare occasions when I was excited or connected, but most of the time, just getting started required a 'stim' of risk, newness or promotion(or no other choice).
Responsibility is always the fallback excuse, but it isn't living, or so I'm supposed to believe.
I think caring is relative: to how much energy we have and to how much others actually care (not just say they do, but show up once in a while: follow up from a doctor once in a while? I'm told it happens...).